Take a moment and look inside your wallet—chances are you’ve got at least one $1 bill tucked away. Normally, we barely give them a second thought, right? But here’s the surprising part: some $1 bills are worth a lot more than a single dollar, depending on their serial numbers.
A website called CoolSerialNumbers.com is actively collecting bills with unique or “fancy” serial numbers. If your $1 bill matches one of their sought-after patterns, it could be worth hundreds—or even thousands—of dollars. Here’s what to watch for:
- 7 repeating digits on Federal Reserve notes (like 09999999, 18888888, 19999999)
- 7 of a kind (for example, 00010000, 00090000, 90999999)
- Super radars (like 01111110, 10000001, 80000008)
- Super repeaters (for instance, 67676767)
- Double quads (such as 11110000, 44440000, 88880000)

And that’s just a portion of the list! CoolSerialNumbers.com maintains a Want List with even more rare serial number patterns that they’re actively seeking.
Who would’ve thought that a simple $1 bill, often overlooked and crumpled in your pocket, could turn into a small fortune? Take a close look at your bills—you might just have hit the jackpot without even realizing it.